LINQ

Line4
int[] numbers = { 10, 20, 30, 40, 1, 2, 3, 8 }; 
 
  // LINQ query!  
  var subset = from i in numbers where i < 10 select i; 
 
  Console.Write("Values in subset: "); 
  foreach (var i in subset) 
  { 
    Console.Write("{0} ", i); 
  } 
  Console.WriteLine();